Grassy Island is a Island located in Peterborough, Ontario and has an elevation of 241 meters.

• Latitude: 44° 33' 18'' North   (decimal: 44.5550000)
• Longitude: 78° 15' 51'' West   (decimal: -78.2641666)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 241 meters
• Location: Peterborough
• Atlas of Canada Locator Map: Grassy Island
• GPS Coordinate Locator Map: Grassy Island Lat/Long